Oil-well packing.



PATENTED DB0; 1v., 1907..

W. B. DAUGHERTY.

OIL WELL PACKING.

. APPLIGATION PILBD vJULYZQ, 1907.

AT! (HGH/H VS lit WARREN BRIGGS DAUGHERTY, OF SAN LUIS OBISPO, CALIFORNIA. v

OIL-WELiZ' PACKING.

ne, smeet.

Specceton of Letters Patent.

Patented. nec. 17, ieoz.

Application filed 'Tilly 29| 1907. Serial lloI 386.041.

l ,To cil 'whom 'it may concern:

`iaclnet or iackin f which surrounds the Welll, D

it niovm that l, WARREN fBnIeGs Henner r, a citizen of the United States, reresidin et Sen Luis Obispo, in the county 0i San Luis @bispo and State of Califo1r1ia,have invented e new and useful Oil-Well Packing,l

of which the following is a epeciiication.

This invention relates to packing for oil Wells and irais for its object to provide improved means for acking the exterior Walls oi tile Well casing t iereby to prevent the passage of Water from an upper stratum of Water beering sand to e lower stratum of oil bearingvsand during tlie operation of sinking a wel ji. further object is `to provide a flexible cursing; and is e'iinpressible laterally into engageinent vvitlrtiie walls of the hole beneath the Water carrying stratum.

further oliieet is to provide e sliding sliiot or collar adapted to beer against the ad- "it end oi2 the jacket or packing and efl expansion oic the packing when the positioned within 'the hole.

' rtlier object of the invention is to improve this clase oi devices so as their utility, durability and eilicie' I ,r objeets end advantirges will appezir in tl'ie following description7 it being;r nnderstood that various changes .in form, proportions and minor details of construction :may be resorted to within. tlie scope of n the eppenoed eleirns tbe :iccoirnpenying drawings forming a ci tliis specification: Figure l. is a ver er., mal view ol a packing constructed :'i 'accorde-nce vvitli niy 'invention showing qu; in position on awell casing, the

. 2 is a similar view showing the pecking expended and in engageinei of i li. the Walls oi the hole.

trensverse sectional view taken 'll i. l.

er numerals of reference indicate coron the line responding; parte in ell of the figures of the drawings.

Ti packing forming the subject lie present invention is princined for rise in connection Witli oil L' tire passage oi Water e Veil 'mi W te niediete cley stratum tl to L; tri-item ig in normal or inoperative posi-v Fig. 3 is a The upper end of one of the sections of the Well casing` 1s formed with an. annular en y largement 8 defining a stop shoulder 9 While `to the inclination of the sleeve 1l thereby to prevent downward movement of the slice on the Well casing.

Surronndmg the casing and interposed between tlie stop shoulder 9 and upper edge of the shoe l2 is s flexible packing or jacket 13 adapted to be compressed laterally in eI1' gageinent with the Walls of the hole `lei at the clay bearingstretuin G thereby to prevent the water from tbe 'upper stratum 5 from owing downwardly over the exterior surface of the well casing to the lower oil bearing stratum '7.

'l' he lower end of the slioe l2 is arranged in the path of a Shoulder formed by the reduced bore i6 of the liole or opening liso that when the shoe comes in Contact with the shoulder l5, said shoe will beioroed in engagement vvitli the packing or jacket 13 and thus elect the expansion of the same.

As a Ineens for'locking the shoe against accidental displacement vvhen positioning the casing in the hole or opening 14 there is pro vided a transverse locking member preterably formed in two sections T17 and lll raving their adjacent ends over-lspped and provided witlrelongeted slots i9 for the rece/pe tion of a clamping bolt 20.

The outer; ends of tile locking members or bars 17 and 'i8 `extendtiirougli suitable ope-nings 2l in-tlie 'well casing end tinto correspondingly shaped. sockets 22 formed in the shoe 12. thus locking the slioe in position on the Well casing.

In sinking a Well the liole or opening lliisv formed with the reduced portion i6 at the point Where it is desired 'to sl'iut oil the flow of Water from tlie upper Water carrying stratum to the lower oil bearing stratum.

The ticket or packing 13 is tlicn pleced in position on one ol the casing sections with the shoe l2 engaging the conical sleeve, ll and with the lecltng members i7 and i8 extending transversely across the Well casing and seated in the soeltets The casing section is then positioned within the hole 14 and moved longitudinally of the latter until the lower end of the shoe 12 engages the stop shoulder 15 -formed by the reduced bore 16 of the hole or opening, after which a bailer o1; othersuitable tool is in' serted through the upper end of the well casing and the locking membersl 17 and 18 released from engagement with the shoe. An additional casing section 23 is then threaded on the jacket carrying section and said jacket carrying section forced longitudinally within the opening or hole i4. l

As .the jacket carrying section is moved longitudinally of the opening 14 the upper edge of the shoe 12 will bear against theadjacent edge of the ilexible jacket or packing 13 and compress the latter against the stop shoulder 9 thus causing the jacket or packing to expand laterally in engagement with the walls of the hole or opening 13 at. the clay stratum 6 so as to e'ectually prevent the passage of water around the exterior walls of the casing at saidclay bearing stratum.

Attention is here called to the fact that the tapered sleeve 11 serves to lock the' shoe 12 in the proper position on. the well 'casing preparatory to introducingthe locking members l 1-7 and 18, while said locking members prevent the shoe from riding upwardly on the well casing. and prematurely expanding the casing or packing should the shoe engage an obstruction in the hole or opening 14 when positioning the casing within said hole.

By making the shoe and collar detachable ticular easing section. i

From the foregoing description it will be seen that there is provided an extremely simple, inexpensive and eilicient device admirar bly adapted for the attainment of the ends 'in view. Y

'Having thus described the invention wh at is`clainied is:

1. A packing for oil wells including acasing provided with a stop shoulder, a tapered sleeve secured. to the casing, a correspondingly tapered shoe slidably mounted on vthe sleeve, and an ex )ansible jacket interposed between the shoullder and shoe and movable to ex anded position by engagement with said s oe.

2. A packing for oil wells includin a casthe same may be readily applied to any paringprovided with astop shoulder, a re atively stationary tapered sleeve secured to the easing, a correspondingly tapered shoe slidably mounted on the sleeve, a com ressible jacket surrounding the exterior wal s olf-the casing and interposed between the stop shoulder and shoe, respectively, and means for locking the shoe against longitudinal movement on the casing. f

3. A packing for oil Wells including a ogsing provided with 'a stop shoulder, arelatively stationary conical bearing sleeve threaded on the exterior walls oi' the casing, a correspondingly tapered movable shoe bearing against tapered walls of the sleeve, and an expansible j acket` interposed between the stop shoulder and shoe,` said jacket being .movable to expanded position by engage ment with 'the shoe. f

4. A packing for oil wells including a casing having one end thereof provided with a stop shoulder and its other end formed with exterior threads, a relatively stationary conical bearing sleeve engaging the threaded.A walls of the easing, a corres ondingly tapered shoe bearing against the s eeve, and an expansible jacket interposed between the sto shoulder and shoe andmovable to expanded position by engagement with said shoe.

5. A packing for oil wells including a casing provided with a stop shoulder and having oppositely disposed openings formed therein, a tapered s leeve secured to the casbeneath the openings, a shoe slidabl mounted on the casing and. provided with sockets adapted to register with the openings in the casing, locking members extending transversely of the casing and having their inner ends united and their outer ends projected through. the openings for engagement with the sockets, and a compressible jacket interposed between the stop shoulder and shoe and movable to expanded position by engagement with said shoe.

6'. A packing for oil wells including a easin(r having a stop shoulder and having its side walls provided with'oppositely disposed 10C openings, a shoe engaging' the Walls of the casing and rovi ded With. sockets adapted to register wit i the openings in said Wall, section al bars extending transversely across' the y casing and having their outer ends extending.' 105 through the openings in the casing forengagement withthe sockets' and their dinner ends over-lapped end provided with elongated slots, a fastening device engaging the` walls of the slots, and a flexible jacket inter- 110 posed between the shoulder and the shoe, said jacket being movable to expanded *posi-'jy tion by engagement with the shoe.

In testimony that I claim the foregoing as my bwn, l` have hereto affixed my signature 115 in the presence of two witnesses.

' WARREN BRIGGS DAUGHERTY.

Witnesses:

v E. C. KNIFFIN,

ANDY' C. SHUsTER. 

